Roofing shingle



Nov. 8; 1927.

1,648,692 v J. A. McCARTHY ROOFING SHINGLE INVENTOR flflfiarf/gy.

ATTOiQNEY Filed Jan.20, 1926 Patented Nov. 8, 192 7.

UNITED STATES JOHN AUGUSTUS MOCARTHY, OF ST. JOSEPH, MISSOURI.

noormesnmenn.

Application filed January 20, 1926. Serial No, 82,458.

My invention relates to roofing shingles and more particularly to what is commonly known as anomposition or asphalt shingle or the interlocking type, the principal ob ect of the invention being to provide a shingle of this composition and type which may interlock with other like shingles in an'adjacent course to align the shingles of a roof 1n llOIlzontalcourses and-to break joints in successive'courses to form aroof of substantially continuous sheethonstruction having the appearance of anordinary shingled roof.

"Another object of the invention 1s to provide a shingle wherein the interlocking ele- 5 ments are so arranged that when a pro-per number of the shingles are assembled 1n a roof their exposed or weather portions are of uniform size, thereby maintaining an even pattern. p

In accomplishing these and other ob ects of the invention I have provided improved details of structure, the preferred forms of which are illustrated in the accompanying drawings, wherein Fig. 1 1s a perspective View of a section of roof. covered with shingles embodying my invention, parts being broken away and some of the shingles being shown in'assembling position for better illustration. Fig. 2 is a detail, fragmentary, perspective view of portions of adjacent shingles of one roof course, illustrating the locking ton e or key of a subsequent course about, to be 1nterlocked in the key slot formed between the ad'acent shingles of the first course.

' ig. 3 is a similar ,view with the inserted to form the interlock.

Fig. 4 illustrates the constructlon assembly of a further modified form of shingle embodying my invention. Referrin more in detail to the drawin by numera of reference p 1 designates a shingle cut from asheet of composition, asphalt or like roofing material,

tongue comprising a body portion 2 of substantiallyrectangular shape provided. centrally of one end with an integral extension 3, having laterally extending ears-4 and 5 cut at an angle to form the notches 6 and 7 and provide a key member 8 tor interlocking the shingle with other like shingles when a number of the shingles are assembled to form a roof covering. v I

In the edges of each shingle, about its longitudinal center'arenot'ches 9 and 10, the

portion of the shingleat the lower or weather each course bemg nailed as at 22 an it is impossib e for it to'curl into such position that it can get out of the slot, thus end 11 of the shingles being narrower than i the cover portion 12, to provide spear shaped slots 13 between adjacent shingles in a course when the shingles are assembled on a roof.

The shingles are referably cut in transverse rows from'a sheet or roll of roofing 'material and in order to prevent waste of material the keys on the ends of one row of shingles are cut from this portion of the rollwhich will constitute the material for the second row of shingles when the first row of shingles is removed, so that each shingle has the key Sat one end and the recess 14 at the other end, the edges 15 and 16 of thekeys being cut on converging line's, forming V shaped seats 17 at the bottoms of the recess! es'iwhich may serve as guides in laying the shingles.

In laying the shingles a strip of felt roofmg 18 is laid along the edge of the roof u on the sheathing 19 and nailed or cemente in 'place, after which a second strip20, having spear shaped slots 21 provided at their upper ends with notches 21 similar to the notches '9 and 10, spaced at intervals alon its lower edge to receive the keys 8 on the st row of shingles.

In applying each shingle of the first course one of the ears 4 or 5 of its key 8 is inserted in the head of a slot'21 and under the strip 20, the other ear being slipped into a notch 21, so that by rotatin the shingle to bring it to a right angle wit the edge of the roof, its other ear is moved to position under the strip.

After the first course of shingles has been set, a second course is ap lied with the keys inserted into the spear s a ed recesses constituting housings forme by adjacent shingles in a manner similar to the application of the shingles of thefirst course to the strip 20, the upper ends of the shingles of shingles as described, it cannot be removed without rotatin the'shingle, reversely to. movement requlred of its insertion, and since the shin le is firmly nailed in place, a

ocking the center of the shingle and holding itdown tightly over the joint at the upper ends of the shin lesin the next lower course, the point at w ich a roof is most apt to leak, because of separation of the' shingles by warping or wind pressure.-

Attention is called to the fact that the base of the head of. the spear-shaped slot is equal to thewidth of the key at its throat, and may be varied according to the width ofv key desired, and that the spacing of the vertical "sides of the slot is maintained the abutting edges of the enlarged upper portions of the shingles, so that all spaces.

' willbe maintained uniform.

As before mentioned, the recess at the top of eachvv shingle serves as a guide for vertically aligning the shingles, since the edges of the shingles in the course underconstruction may be aligned with the vertex of the notch at the bottom of the recess, as indicated. at'24 in Fig.1.

Inthe construction shown in Fig. 4, the locking keyis placed at the lower point of the diamond,'as at 25, and the notches 26' and 27 which are equivalent to the notches 9 and 10 in the square type of shingle are cut in the horizontal corners of the diamond as m' the preferredconstruction; but proto .provide'substantially the same interlock viding a roofing of only a single thickness.

From the foregoing it will be apparent 30- that shingles constructed according to 'my invention cannot curl nor blow loose, and

being locked one to'the other in regular courses, will provide a roof of pleasing appearance and great serviceability.

What I: claim and desire to secure by Letters Patent-is a 1. A shingle having a locking key near the center-.of its butt having laterally extending portions, and a semi-spear shaped housing in a vertical"edge, thenarrowest diameter ofthe key being substantially equal to the radius of the curveof the semi-spear shaped recess. '2'. A shingle having a locking ke near the center of its butthaving latera 1y extending portions, and a semi-spear shaped housing in a vertical edge, the narrowest diameter of the key being substantially equal to the radius of the curve of the semlspear shaped recess and substantially equal to twice the base of the semi-spear shaped housing.

In' testimony whereofI aflix my signature.

JOHN AUGUSTUS MocAn'rHY; 

